- SQL code
我有一张表A,有字段A(编号，插入一行编号+1)，字段B（金额），字段C（人次）现在想统计一段数据：select count(1) from 表A where 字段A>=200 and 字段A<=400结果是199张，漏了一个编号，想用一个查询语句查出漏的编号是那个号？或者漏的编号的上一个编号
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--参考
- SQL code
SELECT Col1+1 AS 缺号起点, (SELECT MIN(Col1) FROM tbWHERE Col1>t.Col1) -1 AS 缺号终点 FROM tb AS t WHERE NOT EXISTS(SELECT * FROM tb WHERE Col1=t.Col1+1)
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假设只有三位数字。
那么可以用如下代码:
- SQL code
SELECT 字段1 from LI Twhere not exists (select 1 From LI where (Cast(right(字段1,3) as int) - cast(right(T.字段1,3) as int)) = 1)
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- SQL code
--生成已用编号分布字符串的函数 CREATE FUNCTION f_GetStrSeries(@col1 varchar(10)) RETURNS varchar(8000) AS BEGIN DECLARE @re varchar(8000),@pid int SELECT @re='',@pid=-1 SELECT @re=CASE WHEN [email protected]+1 THEN @re ELSE @re +CASE WHEN RIGHT(@re,CHARINDEX(',',REVERSE(@re)+',')-1)[email protected] THEN '' ELSE CAST([email protected] as varchar) END +','+CAST(col2 as varchar) END, @pid=col2 FROM tb WHERE [email protected] ORDER BY col2 RETURN(STUFF(@re,1,2,'') +CASE WHEN RIGHT(@re,CHARINDEX(',',REVERSE(@re)+',')-1)[email protected] THEN '' ELSE CAST([email protected] as varchar) END) END GO --生成缺号分布字符串的函数 CREATE FUNCTION f_GetStrNSeries(@col1 varchar(10)) RETURNS VARCHAR(8000) AS BEGIN DECLARE @re varchar(8000),@pid int SELECT @re='',@pid=0 SELECT @re=CASE WHEN [email protected]+1 THEN @re ELSE @re+','+CAST(@pid+1 as varchar) +CASE WHEN @pid+1=col2-1 THEN '' ELSE CAST(1-col2 as varchar) END END, @pid=col2 FROM tb WHERE [email protected] ORDER BY col2 RETURN(STUFF(@re,1,1,'')) END GO --调用测试 --测试数据 CREATE TABLE tb(col1 varchar(10),col2 int) INSERT tb SELECT 'a',2 UNION ALL SELECT 'a',3 UNION ALL SELECT 'a',5 UNION ALL SELECT 'a',8 UNION ALL SELECT 'a',9 UNION ALL SELECT 'b',1 UNION ALL SELECT 'b',5 UNION ALL SELECT 'b',6 UNION ALL SELECT 'b',7 --查询 SELECT col1, col2_Series=dbo.f_GetStrSeries(col1), col2_Series=dbo.f_GetStrNSeries(col1) FROM tb GROUP BY col1 /*--结果 col1 col2_Series col2_Series -------------- ------------------------ -------------- a 2-3,5,8-9 1,4,6-7 b 1,5-7 2-4 --*/ --生成已用编号分布字符串的函数 CREATE FUNCTION f_GetStrSeries(@col1 varchar(10)) RETURNS varchar(8000) AS BEGIN DECLARE @re varchar(8000),@pid int SELECT @re='',@pid=-1 SELECT @re=CASE WHEN [email protected]+1 THEN @re ELSE @re +CASE WHEN RIGHT(@re,CHARINDEX(',',REVERSE(@re)+',')-1)[email protected] THEN '' ELSE CAST([email protected] as varchar) END +','+CAST(col2 as varchar) END, @pid=col2 FROM tb WHERE [email protected] ORDER BY col2 RETURN(STUFF(@re,1,2,'') +CASE WHEN RIGHT(@re,CHARINDEX(',',REVERSE(@re)+',')-1)[email protected] THEN '' ELSE CAST([email protected] as varchar) END) END GO --生成缺号分布字符串的函数 CREATE FUNCTION f_GetStrNSeries(@col1 varchar(10)) RETURNS VARCHAR(8000) AS BEGIN DECLARE @re varchar(8000),@pid int SELECT @re='',@pid=0 SELECT @re=CASE WHEN [email protected]+1 THEN @re ELSE @re+','+CAST(@pid+1 as varchar) +CASE WHEN @pid+1=col2-1 THEN '' ELSE CAST(1-col2 as varchar) END END, @pid=col2 FROM tb WHERE [email protected] ORDER BY col2 RETURN(STUFF(@re,1,1,'')) END GO --调用测试 --测试数据 CREATE TABLE tb(col1 varchar(10),col2 int) INSERT tb SELECT 'a',2 UNION ALL SELECT 'a',3 UNION ALL SELECT 'a',5 UNION ALL SELECT 'a',8 UNION ALL SELECT 'a',9 UNION ALL SELECT 'b',1 UNION ALL SELECT 'b',5 UNION ALL SELECT 'b',6 UNION ALL SELECT 'b',7 --查询 SELECT col1, col2_Series=dbo.f_GetStrSeries(col1), col2_Series=dbo.f_GetStrNSeries(col1) FROM tb GROUP BY col1 /*--结果 col1 col2_Series col2_Series -------------- ------------------------ -------------- a 2-3,5,8-9 1,4,6-7 b 1,5-7 2-4 --*/